DRAG DROP
There is MS Visual Studio 2010 and MS .NET Framework 4 application PassGuideApp.
PassGuideApp uses the ADO.NET EntityFramework.
PassGuideApp connects to the MS SQL Server database PassGuideDB.
PassGuideApp needs to handle concurrency conflicts.
PassGuideApp also needs to ensure that local changes are saved in PassGuideDB.
Answer: 
Explanation:
This one is a duplicate of question #55, except this one has the answer in C#. The specified answer seems to be correct, see the following link as proof:
http://msdn.microsoft.com/en-us/library/bb336792%28v=vs.110%29.aspx
For some reason the admins reversed question order. So it’s a duplicate of #22 not #55 now.
The answer is missing first entry. It should be:
using (PassGuideDb….